somebody did something
Collins dictionary:
looter
(luːtəʳ)
Word forms: plural looters
COUNTABLE NOUN
A looter is a person who steals things from shops or houses, for example during a war or riot.
In the old days (Atilla the Hun, Ghengis Khan, etc.) looting and pillaging was how the armies got paid. Having said that, I am old enough to remember when looters were shot on sight.